Chapter 19

S00–T88: Injury, Poisoning and Certain Other Consequences of External Causes

Injury, Poisoning and Certain Other Consequences of External Causes diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
Use Additional Code
  • code to identify any retained foreign body, if applicable (Z18.-)
Internal Codes
  • T42.4X5D|

    Adverse effect of benzodiazepines, subsequent encounter

  • T42.4X5S|

    Adverse effect of benzodiazepines, sequela

  • T42.4X6|

    Underdosing of benzodiazepines

  • T42.4X6A|

    Underdosing of benzodiazepines, initial encounter

  • T42.4X6D|

    Underdosing of benzodiazepines, subsequent encounter

  • T42.4X6S|

    Underdosing of benzodiazepines, sequela

  • T42.5|

    Poisoning by, adverse effect of and underdosing of mixed antiepileptics

  • T42.5X|

    Poisoning by, adverse effect of and underdosing of antiepileptics

  • T42.5X1|

    Poisoning by mixed antiepileptics, accidental (unintentional)

  • T42.5X1A|

    Poisoning by mixed antiepileptics, accidental (unintentional), initial encounter

  • T42.5X1D|

    Poisoning by mixed antiepileptics, accidental (unintentional), subsequent encounter

  • T42.5X1S|

    Poisoning by mixed antiepileptics, accidental (unintentional), sequela

  • T42.5X2|

    Poisoning by mixed antiepileptics, intentional self-harm

  • T42.5X2A|

    Poisoning by mixed antiepileptics, intentional self-harm, initial encounter

  • T42.5X2D|

    Poisoning by mixed antiepileptics, intentional self-harm, subsequent encounter

  • T42.5X2S|

    Poisoning by mixed antiepileptics, intentional self-harm, sequela

  • T42.5X3|

    Poisoning by mixed antiepileptics, assault

  • T42.5X3A|

    Poisoning by mixed antiepileptics, assault, initial encounter

  • T42.5X3D|

    Poisoning by mixed antiepileptics, assault, subsequent encounter

  • T42.5X3S|

    Poisoning by mixed antiepileptics, assault, sequela

  • T42.5X4|

    Poisoning by mixed antiepileptics, undetermined

  • T42.5X4A|

    Poisoning by mixed antiepileptics, undetermined, initial encounter

  • T42.5X4D|

    Poisoning by mixed antiepileptics, undetermined, subsequent encounter

  • T42.5X4S|

    Poisoning by mixed antiepileptics, undetermined, sequela

  • T42.5X5|

    Adverse effect of mixed antiepileptics

  • T42.5X5A|

    Adverse effect of mixed antiepileptics, initial encounter

  • T42.5X5D|

    Adverse effect of mixed antiepileptics, subsequent encounter

  • T42.5X5S|

    Adverse effect of mixed antiepileptics, sequela

  • T42.5X6|

    Underdosing of mixed antiepileptics

  • T42.5X6A|

    Underdosing of mixed antiepileptics, initial encounter

  • T42.5X6D|

    Underdosing of mixed antiepileptics, subsequent encounter

  • T42.5X6S|

    Underdosing of mixed antiepileptics, sequela

  • T42.6|

    Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs

  • T42.6X|

    Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs

  • T42.6X1|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional)

  • T42.6X1A|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional), initial encounter

  • T42.6X1D|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional), subsequent encounter

  • T42.6X1S|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional), sequela

  • T42.6X2|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, intentional self-harm

  • T42.6X2A|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, intentional self-harm, initial encounter

  • T42.6X2D|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, intentional self-harm, subsequent encounter

  • T42.6X2S|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, intentional self-harm, sequela

  • T42.6X3|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, assault

  • T42.6X3A|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, assault, initial encounter

  • T42.6X3D|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, assault, subsequent encounter

  • T42.6X3S|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, assault, sequela

  • T42.6X4|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, undetermined

  • T42.6X4A|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, undetermined, initial encounter

  • T42.6X4D|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, undetermined, subsequent encounter

  • T42.6X4S|

    Poisoning by other antiepileptic and sedative-hypnotic drugs, undetermined, sequela

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